Analog Devices VisualDSP++ 5.0 Service Manual page 93

Arguments
BitsToClear
Return Value
None
VisualDSP++ 5.0 Device Drivers and System
Services Manual for Blackfin Processors
Replica of the IMASK register containing bits that are to
be cleared in the real IMASK register. A bit with a value of
'1' clears the corresponding bit in the IMASK register. A
bit with the value of '0' leaves the corresponding bit in the
IMASK register unchanged.
Interrupt Manager
2-25